A demister for a desulfurization system

Abstract

This utility model belongs to the field of demister technology and discloses a demister for a desulfurization system, including a treatment cylinder. From top to bottom, the treatment cylinder is equipped with a spray cleaning assembly, a demister body, and a vibration dust removal assembly. The spray cleaning assembly includes a protective shell, a rotary joint, a spray pipe, a cleaning brush, a drive motor, a drive block, a belt, and a driven block. The protective shell is fixed to the top of the treatment cylinder. The drive block and the driven block are respectively located at both ends inside the protective shell and connected by a belt. This utility model, by incorporating the spray cleaning assembly, allows the drive motor to rotate the drive block, and the belt synchronously drives the spray pipe to rotate via the driven block, supplying water to form an all-around spray rinsing. Simultaneously, the cleaning brush penetrates deep into the gaps between the plates for physical scrubbing, cleaning stubborn dirt and scale that are difficult to rinse in narrow gaps, achieving online non-stop cleaning and significantly reducing the frequency of manual disassembly and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of demister technology, specifically a demister for desulfurization systems. Background Technology

[0002] Demisters, as core purification equipment at the end of desulfurization systems, are widely used in desulfurization processes in industries such as power, chemical, and metallurgy. Their main function is to trap gypsum slurry droplets, fine water mist, and dust impurities carried in the flue gas after the desulfurization reaction. This prevents these corrosive media from being discharged with the flue gas and causing corrosion and wear to subsequent equipment such as induced draft fans, flues, and chimneys. Simultaneously, it avoids excessive flue gas emissions caused by droplet entrainment, ensuring that the desulfurization system meets national environmental emission standards. Existing desulfurization systems often use demister plates with corrugated or baffled structures, whose surfaces and gaps easily adsorb slurry droplets... Dust and reaction residues accumulate over time, forming stubborn dirt and scale. Current cleaning methods for demisters mostly involve manual disassembly and cleaning or rinsing with spray pipes installed above and below the demister. However, since the plates of the demister are often zigzag-shaped, it is difficult to spray water directly onto the middle section of the plates during top and bottom rinsing. This results in inadequate cleaning of the middle section, leading to blockage. At the same time, existing demisters lack an effective dynamic dust removal structure, and dry dust in the flue gas easily accumulates and clumps on the surface of the demister plates, causing narrowing or even blockage of the flue gas passage, thereby reducing flue gas flow efficiency and demister effect.

[0003] Therefore, a demister for desulfurization systems is proposed to address the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a demister for a desulfurization system. It achieves online, non-stop, all-round cleaning of the demister plates through a spray cleaning component to reduce the frequency of manual maintenance, and achieves dynamic dust removal through a vibration dust removal component and uses a buffer spring for shock absorption, thereby ensuring the demisting and ventilation effect and extending the service life of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a demister for a desulfurization system, comprising a treatment cylinder, on which a spray cleaning assembly, a demister body, and a vibration dust removal assembly are sequentially arranged from top to bottom. The spray cleaning assembly includes a protective shell, a rotary joint, a spray pipe, a cleaning brush, a drive motor, a drive block, a belt, and a driven block. The protective shell is fixed to the top of the treatment cylinder. The drive block and the driven block are respectively disposed at both ends inside the protective shell and connected by a belt. The drive motor is fixed to the protective shell. The body is equipped with a drive motor output shaft connected to a drive block. A through hole is provided at the center of the driven block. The spray pipe is fixed in the through hole, and the top of the spray pipe is connected to a rotary joint. One end of the cleaning brush is fixed to the spray pipe. The demister body includes a bracket and an annular demister plate. The vibration dust removal assembly includes an annular frame, a buffer spring, a connecting plate, and a vibration motor. The annular frame is fixed on the inner wall of the treatment cylinder. The buffer spring is disposed between the bracket and the annular frame. The connecting plate is fixed at the bottom of the bracket. The vibration motor is mounted on the connecting plate.

[0006] Preferably, a through hole is provided at the center of the driven block, the spray pipe is fixed in the through hole, and one end of the spray pipe is connected to the rotary joint.

[0007] Preferably, the driving block and the driven block are arranged in parallel, and the two ends of the belt are respectively sleeved on the outside of the driving block and the driven block.

[0008] Preferably, the bottom of the spray pipe is provided with nozzles at equal intervals, and the nozzles are positioned above the annular demister plate.

[0009] Preferably, the cleaning brush is vertically mounted on the spray pipe, and the bottom end of the cleaning brush is positioned at the interval of the annular demisting plate.

[0010] Preferably, the cross-section of the annular demister plate is corrugated, and tortuous flue gas channels are formed between the annular demister plates.

[0011] Preferably, the two ends of the buffer spring abut against the bracket and the ring frame respectively, and the buffer spring is circumferentially disposed between the bracket and the ring frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model is equipped with a spray cleaning component. The drive motor drives the drive block to rotate, and the belt synchronously drives the spray pipe to rotate through the driven block to supply water to form an all-round spray rinsing. At the same time, the cleaning brush penetrates into the gaps of the plates to perform physical scrubbing, cleaning stubborn dirt and scale that are difficult to rinse in narrow gaps, realizing online non-stop cleaning and greatly reducing the frequency of manual disassembly and maintenance.

[0014] 2. This utility model is equipped with a vibration dust removal component. The vibration motor drives the demisting plate to vibrate continuously at high frequency, shaking off dust, dry debris and loose clumps in real time. This achieves dynamic dust removal during operation and avoids dust accumulation and clumps affecting ventilation and demisting effects. Circumferential buffer springs are arranged between the support frame and the ring frame to ensure uniform vibration transmission and dust removal effect, while also buffering vibration impact, reducing vibration and noise, and extending the overall service life of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the anti-spray cleaning component of this utility model;

[0017] Figure 3 This is a schematic diagram of the spray pipe connection structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the demister body structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the vibration dust removal component of this utility model.

[0020] In the diagram: 1. Processing cylinder; 2. Spray cleaning assembly; 21. Protective housing; 22. Rotary joint; 23. Spray pipe; 24. Cleaning brush; 25. Drive motor; 26. Drive block; 27. Belt; 28. Driven block; 3. Demister body; 31. Support; 32. Annular demister plate; 4. Vibration dust removal assembly; 41. Annular frame; 42. Buffer spring; 43. Connecting plate; 44. Vibration motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The embodiments of this utility model will be described below based on its overall structure.

[0023] like Figures 1 to 5As shown, this utility model provides a demister for a desulfurization system, including a treatment cylinder 1. From top to bottom, the treatment cylinder 1 is equipped with a spray cleaning assembly 2, a demister body 3, and a vibration dust removal assembly 4. It integrates rotary spraying, mechanical brushing, deflector demistering, and vibration dust removal into a single unit, resulting in a compact structure and small footprint. The spray cleaning assembly 2 includes a protective shell 21, a rotary joint 22, a spray pipe 23, a cleaning brush 24, a drive motor 25, a drive block 26, a belt 27, and a driven block 28. It can specifically remove slurry scale from the surface of the annular demister plate 32. The protective shell 21 is fixed to the top of the treatment cylinder 1. The drive block 26 and the driven block 28 are respectively located at both ends inside the protective shell 21, connected by the belt 27. The drive motor 25 is fixed to the protective shell 21. The output shaft of the drive motor 25 is connected to the drive block 26. A through hole is provided at the center of the driven block 28. The spray pipe 23 is fixed in the through hole, and the top of the spray pipe 23 is connected to the rotary joint 22. The center of the driven block 28 limits and fixes the spray pipe 23 to ensure the coaxiality of the spray pipe 23. One end of the cleaning brush 24 is fixed on the spray pipe 23. The demister body 3 includes a bracket 31 and an annular demister plate 32. The vibration dust removal assembly 4 includes an annular frame 41, a buffer spring 42, a connecting plate 43, and a vibration motor 44. The annular frame 41 is fixed on the inner wall of the treatment cylinder 1. The buffer spring 42 is set between the bracket 31 and the annular frame 41. The connecting plate 43 is fixed at the bottom of the bracket 31. The vibration motor 44 is installed on the connecting plate 43. The vibration structure enables the automatic shedding of accumulated dust clumps.

[0024] In this embodiment, the driving block 26 and the driven block 28 are arranged in parallel. The two ends of the belt 27 are respectively sleeved on the outside of the driving block 26 and the driven block 28. The driving motor 25 drives the driving block 26 to rotate, and the driven block 28 rotates synchronously and at the same speed by relying on the friction of the belt 27, so as to realize the smooth transmission of power.

[0025] Spray nozzles are equidistantly arranged at the bottom of the spray pipe 23, and the spray nozzles are positioned above the annular demister plate 32. They follow the spray pipe 23 to make a circular motion, and the spray range fully covers the entire area of ​​the annular demister plate 32 below.

[0026] The cleaning brush 24 is vertically mounted on the spray pipe 23. The bottom end of the cleaning brush 24 is positioned at the interval of the annular demister plate 32. The bottom part of the cleaning brush 24 extends into the gap of the annular demister plate 32 and removes stubborn scale adhering to the plate surface and gap by mechanical scraping and brushing, thus achieving thorough cleaning of the demister body.

[0027] The cross-section of the annular demister plate 32 is set as a corrugated plate, and a tortuous flue gas channel is formed between the annular demister plates 32. The corrugated flow structure extends the residence time of the flue gas and efficiently captures flue gas water mist and droplets by relying on the principles of inertial collision and flow condensation, thus greatly improving the desulfurization and demisting effect.

[0028] The two ends of the buffer spring 42 abut against the bracket 31 and the ring frame 41 respectively, and the buffer spring 42 is circumferentially arranged between the bracket 31 and the ring frame 41. The buffer spring 42 ensures uniform transmission of vibration and ensures dust removal effect.

[0029] The working principle and process of a demister for a desulfurization system: The demister body 3 is supported and fixed by a bracket 31. Multiple sets of annular demister plates 32 adopt a corrugated cross-section structure design. The plates cooperate with each other to form a tortuous and winding irregular flue gas channel. When the misty flue gas passes through the channel from bottom to top, the flue gas flow path is repeatedly bent and blocked, and the airflow direction is continuously and frequently changed. Due to their large inertia, the desulfurization slurry droplets, fine water mist particles, and liquid impurities carried in the flue gas cannot follow the airflow to change direction quickly. They continuously impact and adhere to the surface of the annular demister plates 32. At the bends and folds, a large number of dispersed droplets continuously converge and merge, automatically sliding downwards and collecting under gravity, thus effectively intercepting liquid mist in the flue gas and achieving efficient demisting and purification of the desulfurized flue gas. During long-term operation, scale easily forms on the plates. When the drive motor 25 is started, its output shaft drives the drive block 26 inside the protective housing 21 to rotate synchronously. The drive block 26 and the driven block 28 are arranged parallel to each other and form a synchronous transmission structure through the belt 27, thereby driving the driven block 28 to rotate stably. A rotary joint 22 is connected to the top of the spray pipe 23, which can... Under the premise of continuous external water supply, the spray pipe 23 rotates synchronously with the driven block 28, and the nozzles arranged at equal intervals at the bottom spray cleaning water downwards in all directions to fully cover and rinse the annular demister plate 32; at the same time, the cleaning brush 24, which is vertically fixed on the spray pipe 23, rotates synchronously, and the bottom part of the cleaning brush 24 extends into the gaps of the annular demister plate 32 to remove stubborn scale adhering to the plate surface and gaps through mechanical scraping and brushing, so as to achieve thorough cleaning of the demister body. The vibration motor 44 continuously... The receiving plate 43 is fixed to the bottom of the bracket 31 of the demister body 3. When cleaning the demister, the vibration motor 44 continuously outputs high-frequency micro-amplitude vibration. The vibration force is directly transmitted to the bracket 31 and the overall annular demister plate 32. Buffer springs 42 are evenly distributed circumferentially between the bracket 31 and the annular frame 41 fixed to the inner wall of the treatment cylinder 1. The buffer springs 42 ensure uniform transmission of vibration, ensure dust removal effect, and promote the rapid shedding and settling of dry dust and agglomerated impurities attached to the plate surface. This prevents impurities from clogging the flue gas passage, facilitates the cleaning and maintenance of the demister, and ensures long-term stable operation of the equipment.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mist eliminator for a desulphurization system comprising a treatment cylinder (1), characterized in that: The processing cylinder (1) is provided with a spray cleaning assembly (2), a demister body (3), and a vibration dust removal assembly (4) arranged sequentially from top to bottom. The spray cleaning assembly (2) includes a protective shell (21), a rotary joint (22), a spray pipe (23), a cleaning brush (24), a drive motor (25), a drive block (26), a belt (27), and a driven block (28). The protective shell (21) is fixed to the top of the processing cylinder (1). The drive block (26) and the driven block (28) are respectively arranged at both ends inside the protective shell (21). The drive block (26) and the driven block (28) are connected by a belt (27). The drive motor (25) is fixed on the protective shell (21), and the output shaft of the drive motor (25) is connected to the drive block (26). Next, a through hole is provided at the center of the driven block (28), the spray pipe (23) is fixed in the through hole, and the top of the spray pipe (23) is connected to the rotary joint (22). One end of the cleaning brush (24) is fixed on the spray pipe (23). The demister body (3) includes a bracket (31) and an annular demister plate (32). The vibration dust removal assembly (4) includes an annular frame (41), a buffer spring (42), a connecting plate (43), and a vibration motor (44). The annular frame (41) is fixed on the inner wall of the processing cylinder (1). The buffer spring (42) is set between the bracket (31) and the annular frame (41). The connecting plate (43) is fixed at the bottom of the bracket (31). The vibration motor (44) is mounted on the connecting plate (43).

2. The demister for a desulfurization system according to claim 1, characterized in that: The driving block (26) and the driven block (28) are arranged in parallel, and the two ends of the belt (27) are respectively sleeved on the outside of the driving block (26) and the driven block (28).

3. A demister for a desulfurization system according to claim 2, characterized in that: The bottom of the spray pipe (23) is provided with nozzles at equal intervals, and the nozzles are positioned above the annular demister plate (32).

4. A demister for a desulfurization system according to claim 3, characterized in that: The cleaning brush (24) is vertically mounted on the spray pipe (23), and the bottom end of the cleaning brush (24) is positioned at the interval of the annular demisting plate (32).

5. A demister for a desulfurization system according to claim 4, characterized in that: The cross-section of the annular demister plate (32) is corrugated, and a tortuous flue gas passage is formed between the annular demister plates (32).

6. A demister for a desulfurization system according to claim 5, characterized in that: The two ends of the buffer spring (42) abut against the bracket (31) and the ring frame (41) respectively, and the buffer spring (42) is circumferentially arranged between the bracket (31) and the ring frame (41).

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